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Crystallization of germanium-silicon solid solution from the vapour phase in microgravity conditions
Authors:VS Zemskov  IN Belokurova  BS Vasilina  OI Mavrin
Institution:The Baikov Institute of Metallurgy, U.S.S.R. Academy of Sciences, Moscow, U.S.S.R.
Abstract:Mass transport has been investigated in the closed system Ge-Si-Br used for preparing germanium-silicon solid solution crystals by chemical transport reaction method in space. It has been shown that the experimental rate of mass transport may be analytically described in proposing a pure diffusion mechanism. In space, growth of needles and whiskers occured without practically formation of a polycrystalline layer characteristic of on-earth experiments.
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